A large amount of methamphetamines worth more than $3.9 million was seized last week at the Paso Del Norte international crossing.

A drug-sniffing dog named Joep alerted U.S. Customs and Border Protection officers to a 1989 Chevrolet 1500 pick-up truck at about 1 p.m. Friday at the Paso Del Norte international crossing, customs officials said.

“Smugglers spent considerable time and effort to conceal this liquid meth load,” CBP El Paso Port Director Beverly Good said in a statement. “This seizure proves again that smugglers will use any available space in a vehicle to hide their contraband.”